US PATENT SUBCLASS 52 / 673
.~.~ Perforated

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

633  DF  OPENWORK; E.G., TRUSS, TRELLIS, GRILLE, SCREEN, FRAME, OR REBAR CHAIR {12}
660  DF  .~ Fabric or lattice; e.g., indeterminate grating {7}
673.~.~ Perforated {2}
674  DF  .~.~.~> Corrugated
675  DF  .~.~.~> Material laterally displaced

DEFINITION

Classification: 52/673

(under subclass 660) Structure wherein the member is a perforated sheet.

SEE OR SEARCH THIS CLASS, SUBCLASS:

670+, for an expanded metal sheet.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles,

596, for perforated metallic stock material.